1428823885437 has 24 divisors (see below), whose sum is σ = 2299256832600. Its totient is φ = 848956364928.

The previous prime is 1428823885369. The next prime is 1428823885441. The reversal of 1428823885437 is 7345883288241.

1428823885437 is a `hidden beast` number, since 1 + 4 + 2 + 8 + 8 + 2 + 3 + 88 + 543 + 7 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 14498808921 + 1414325076516 = 120411^2 + 1189254^2 .

It is not a de Polignac number, because 1428823885437 - 2²⁴ = 1428807108221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428823885537) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 210551262 + ... + 210558047.

It is an arithmetic number, because the mean of its divisors is an integer number (95802368025).

Almost surely, 2^{1428823885437} is an apocalyptic number.

It is an amenable number.

1428823885437 is a deficient number, since it is larger than the sum of its proper divisors (870432947163).

1428823885437 is a wasteful number, since it uses less digits than its factorization.

1428823885437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421109357 (or 421109354 counting only the distinct ones).

The product of its digits is 82575360, while the sum is 63.

The spelling of 1428823885437 in words is "one trillion, four hundred twenty-eight billion, eight hundred twenty-three million, eight hundred eighty-five thousand, four hundred thirty-seven".